Wes xx mediapipe integration

Packages/com.github.homuler.mediapipe/Runtime/Scripts/Unity/RotationAngle.cs

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+// Copyright (c) 2021 homuler
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT.
+
+using UnityEngine;
+
+namespace Mediapipe.Unity
+{
+  public enum RotationAngle
+  {
+    Rotation0 = 0,
+    Rotation90 = 90,
+    Rotation180 = 180,
+    Rotation270 = 270,
+  }
+
+  public static class RotationAngleExtension
+  {
+    public static RotationAngle Add(this RotationAngle rotationAngle, RotationAngle angle)
+    {
+      return (RotationAngle)(((int)rotationAngle + (int)angle) % 360);
+    }
+
+    public static RotationAngle Subtract(this RotationAngle rotationAngle, RotationAngle angle)
+    {
+      return (RotationAngle)(((int)rotationAngle - (int)angle) % 360);
+    }
+
+    public static RotationAngle Reverse(this RotationAngle rotationAngle)
+    {
+      return (RotationAngle)((360 - (int)rotationAngle) % 360);
+    }
+
+    public static Vector3 GetEulerAngles(this RotationAngle rotationAngle)
+    {
+      return new Vector3(0, 0, (int)rotationAngle);
+    }
+  }
+}